In modern telecommunications, service continuity is no longer optional—it is essential. For Managed Service Providers (MSPs) and enterprise operators deploying Plain Old Telephone Service (POTS) replacement solutions, backup power has historically been a major barrier. Devices often require bulky, expensive, multi-cell battery packs that complicate installations, limit deployment flexibility, and inflate service costs.

The PR12 redefines this standard. Through innovative engineering and ultra-efficient power management, the PR12 delivers TRU24™ performance—up to 24 hours of standby time—using only a single 18650 lithium-ion battery cell. This achievement is not only unique in the market but represents a new benchmark in reliability, sustainability, and cost-effectiveness for POTS replacement.

PR12

The Power of One: Why a Single 18650 Matters

An 18650 cell is compact, widely available, and field-replaceable. By designing PR12 to run efficiently on such a modest power source, Vola Networks eliminates the need for oversized battery packs. This translates into multiple advantages:

• Smaller footprint – No bulky enclosures or heavy add-ons.
• Lower cost – Replacement cells are inexpensive compared to proprietary packs.
• Supply chain resilience – 18650 cells are globally available, reducing lead times and risk of shortages.

While other solutions attempt to solve reliability with larger batteries, PR12 solves it with smarter design. The key lies not in the size of the cell, but in the efficiency of the system.

Intelligent Low-Power Design

The PR12 is engineered to minimize power draw without sacrificing functionality:

• Sleep Mode Efficiency – When no DC power is connected, PR12 automatically enters a low-power sleep state. In this mode, both WAN and LAN Ethernet ports shut down, drastically reducing idle consumption.
• Timed Wake Cycles – During standby, PR12 wakes every 30 seconds to perform quick system checks, ensuring readiness without excessive drain.
• Cloud Synchronization – Even in sleep mode, PR12 maintains reliable cloud connectivity through VolaCloud, with a configurable 300-second heartbeat cycle. This ensures that remote monitoring, provisioning, and status updates remain active.
• Instant Call Responsiveness – Incoming SIP or VoLTE calls immediately trigger device wake-up, guaranteeing communication availability.

This combination of smart sleep cycles and selective wake mechanisms enables the PR12 to stretch its standby operation up to 26 hours under optimal conditions—well beyond the industry-standard 24-hour benchmark.

PR12

Optimized for Real-World Scenarios

In real-world deployments, standby performance often depends on the type of analog handset connected. Vola’s internal testing shows that when paired with a non-LCD analog phone, PR12 consistently achieves maximum endurance. By accounting for these usage scenarios in the design phase, PR12 ensures dependable performance across diverse environments—whether in residential, enterprise, or industrial settings.

Simplified Maintenance with Field-Replaceable Batteries

A critical advantage of PR12 is its field-replaceable battery design. Technicians can easily swap out the 18650 cell on-site without specialized tools or training. This capability yields several operational benefits:

• Faster service turnaround – No waiting for proprietary battery packs to arrive or charge.
• Reduced maintenance cost – Affordable cells mean lower total cost of ownership.
• Sustainable servicing – Carrying spare cells allows MSPs to perform quick, eco-friendly replacements in the field.

Instead of relying on centralized charging or large, complex packs, PR12 enables a modular, sustainable approach to power management.

Safety and Reliability Standards

Achieving such efficiency does not come at the expense of safety. PR12 leverages high-quality lithium cells from EVE, certified under UL1642 safety standards, ensuring safe operation even under demanding conditions. Combined with carefully calibrated charging thresholds, PR12 provides reliable, safe power cycles throughout its service life.

PR12

Installation Flexibility

The compact, lightweight design of PR12 also opens new deployment opportunities:

• Telecom Closets & Panels – Easily fits into dense wiring cabinets where space is limited.
• Elevator Shafts & Control Rooms – Simplifies mounting in locations with weight or size restrictions.
• Remote or Harsh Environments – Ensures extended uptime without large infrastructure upgrades.

This flexibility allows MSPs to scale deployments quickly across distributed networks, from urban high-rises to rural facilities.

Lower Total Cost of Ownership

The PR12’s efficient design delivers measurable cost savings:

• Reduced upfront investment – No need for oversized batteries.
• Lower replacement costs – Affordable 18650 cells keep long-term maintenance budgets predictable.
• Fewer truck rolls – Technicians can resolve issues on-site with spares in hand, minimizing downtime and service disruption.

For MSPs operating at scale, these savings compound significantly, directly improving profitability while maintaining service reliability.

Redefining Backup Power with TRU24™

The PR12 demonstrates that reliable POTS replacement does not require oversized batteries or costly maintenance overhead. By combining TRU24™ 24-hour standby performance with a single 18650 cell, PR12 delivers a solution that is lightweight, cost-effective, and sustainable.

With its intelligent low-power design, field-replaceable battery, and proven compliance with safety and carrier standards, PR12 sets a new benchmark for what service providers can expect from modern POTS replacement technology. For MSPs seeking to scale deployments while reducing costs and improving service resilience, PR12 is more than a device—it is proof that small batteries can deliver big impact.